kernel/arch/alpha/lib/copy_page.S

   1 /*
   2  * arch/alpha/lib/copy_page.S
   3  *
   4  * Copy an entire page.
   5  */
   6
   7         .text
   8         .align 4
   9         .global copy_page
  10         .ent copy_page
  11 copy_page:
  12         .prologue 0
  13
  14         lda     $18,128
  15         nop
  16         unop
  17         nop
  18
  19 1:      ldq     $0,0($17)
  20         ldq     $1,8($17)
  21         ldq     $2,16($17)
  22         ldq     $3,24($17)
  23
  24         ldq     $4,32($17)
  25         ldq     $5,40($17)
  26         ldq     $6,48($17)
  27         ldq     $7,56($17)
  28
  29         stq     $0,0($16)
  30         subq    $18,1,$18
  31         stq     $1,8($16)
  32         addq    $17,64,$17
  33
  34         stq     $2,16($16)
  35         stq     $3,24($16)
  36         stq     $4,32($16)
  37         stq     $5,40($16)
  38
  39         stq     $6,48($16)
  40         stq     $7,56($16)
  41         addq    $16,64,$16
  42         bne     $18, 1b
  43
  44         ret
  45         nop
  46         unop
  47         nop
  48
  49         .end copy_page